(19)
(11) EP 2 607 441 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
24.07.2013 Bulletin 2013/30

(43) Date of publication A2:
26.06.2013 Bulletin 2013/26

(21) Application number: 12198687.1

(22) Date of filing: 20.12.2012
(51) International Patent Classification (IPC): 
C09J 7/02(2006.01)
H01M 2/08(2006.01)
H01M 2/02(2006.01)
H01M 2/16(2006.01)
 C09J 151/00(2006.01)
H01M 4/66(2006.01)
H01M 2/04(2006.01)
(84) Designated Contracting States:
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated Extension States:
BA ME

(30) Priority: 20.12.2011 JP 2011278438
06.12.2012 JP 2012267337

(71) Applicant: Nitto Denko Corporation
Osaka 567-8680 (JP)

(72) Inventors:
  • Kawabe, Shigeki
    Ibaraki-shi, Osaka 567-8680 (JP)
  • Hanai, Hiroomi
    Ibaraki-shi, Osaka 567-8680 (JP)
  • Noumi, Shunsuke
    Ibaraki-shi, Osaka 567-8680 (JP)
  • Take, Hiroyoshi
    Ibaraki-shi, Osaka 567-8680 (JP)

(74) Representative: Grünecker, Kinkeldey, Stockmair & Schwanhäusser 
Leopoldstrasse 4
80802 München
80802 München (DE)

   


(54) Pressure-sensitive adhesive tape for battery, battery using the pressure-sensitive adhesive tape and process for manufacturing a battery


(57) The present invention relates to a pressure-sensitive adhesive tape for battery containing a substrate and a pressure-sensitive adhesive layer provided on at least one surface of the substrate, in which the pressure-sensitive adhesive layer has a thickness of from 2 µm to 100 µm, and in which the pressure-sensitive adhesive tape has a 180° peeling adhesive force toward an aluminum foil after pressure bonding at 25°C being 0.05 N/10 mm or more and a 180° peeling adhesive force toward an aluminum foil after thermocompression bonding at a temperature of 30°C or higher to lower than 200°C being 0.5 N/10 mm or more.
In preferred embodiments, the pressure-sensitive adhesive layer contains an acid modified thermoplastic elastomer and a tackifier.







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